I'm not aware of any way to import these; the closest thing I know of is the Gliffy Plugin.
As far as options, in order of preference I'd try this:
after changes are made in "dia" :
Hi team, I’m Avinoam, a product manager on Confluence Cloud, and today I’m really excited to let the Community know that all customers can now try out the new editing experience and see some of the ...
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